Malicious PDF — malware analysis report

Static analysis result for SHA-256 45d0fc5baae23334…

MALICIOUS

PDF

34.2 KB Created: 2020-10-26 16:17:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: efe258376a1b878b91b69525a54b09b3 SHA-1: fe9b9fd68b4771b64a1073471f92407af2fdc302 SHA-256: 45d0fc5baae2333406a49dfbde5c63278d8d9449ad5e292e120aaf3540fec360
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://gettraff.ru/aws?keyword=public+policy+analysis+pdf+download In PDF document text
    • https://xekixudag.weebly.com/uploads/1/3/4/3/134336078/wexonuwuwi_wuwexepaw.pdfIn PDF document text
    • https://sazaxadapu.weebly.com/uploads/1/3/4/3/134330736/5325521.pdfIn PDF document text
    • https://viwuwobigoku.weebly.com/uploads/1/3/1/3/131378942/3013505.pdfIn PDF document text
    • https://fonamajubeb.weebly.com/uploads/1/3/4/4/134474676/tumonakub_piwexirogowi_jatarobul_maxezuxabipaj.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/jifixatunos.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/jixidused.pdfIn PDF document text
    • https://sijoxedewi.weebly.com/uploads/1/3/4/3/134346210/nevefu.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/likanutavorolebonat.pdfIn PDF document text
    • https://derewoju.weebly.com/uploads/1/3/4/3/134319287/meberu.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/6023986.pdfIn PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/febuzelata-zavaxi-reregu-narixa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403263/normal_5f913450bf495.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369784/normal_5f8934f7760f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378167/normal_5f8d512a5f760.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/0455/6974/files/fotitavikesukebamimit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7777/7061/files/bujuvilifagajezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8240/6816/files/physioex_9.1_answers_exercise_11.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/2758/3135/files/experiment_compare_sugar_in_drinks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7670/4669/files/24836210600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9629/1524/files/internship_report_of_school.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C37 5388 bytes
SHA-256: ed736f7fe4d7d0ee7d09228d7be40e55f988ffa8e39523167443b7be8a305402
font_01_sfnt_off00005e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9F 8452 bytes
SHA-256: 1eaabf99ae9afab2c36f079ad653df07c08565829dcae562e3e89e024607083f